Model of the granulometric composition of the fractured mined rock at the edge
- 1 — St. Petersburg State Mining Institute
- 2 — St. Petersburg State Mining Institute
- 3 — St. Petersburg State Mining Institute
Abstract
The formation of the structure of the chipping zone can be investigated using the method proposed by B.V. Zamyshlyaev to determine the structure of the cavitation layer during explosion of explosives in water near the free surface. The method is based on the use of the laws of disintegration of an arbitrary discontinuity during the interaction of a stress wave with a free surface. As a result of the interaction, a shock wave will propagate in the air, and a rarefaction wave will propagate along the condensed medium from the interface toward the explosion chamber. The maximum tensile stress in the rarefaction wave is determined by the method of mirroring the explosion source with the introduction of an imaginary charge.